Title:
OPTICAL FILM AND PRODUCTION METHOD OF THE SAME, AND PRODUCTION METHOD OF FILM ROLL BODY
Document Type and Number:
Japanese Patent JP2017015898
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an optical film in which bleed-out of an infrared absorbent can be suppressed and a projection can be formed with infrared laser light.SOLUTION: The optical film including an infrared absorbent has a high concentration portion containing an infrared absorbent and a low concentration portion having a concentration of the infrared absorbent lower than that in the high concentration portion. The high concentration portion includes a first high concentration portion and a second high concentration portion; the low concentration portion includes a first low concentration portion, a second low concentration portion, a third low concentration portion, a fourth low concentration portion and a fifth low concentration portion. The first high concentration portion and the second high concentration portion are disposed on either side of the first low concentration portion in a width direction of the optical film; the second low concentration portion and the third low concentration portion are disposed on either side of the first high concentration portion in a thickness direction of the optical film; and the fourth low concentration portion and the fifth low concentration portion are disposed on either side of the second high concentration portion in the thickness direction of the optical film.SELECTED DRAWING: Figure 1
Inventors:
HIRANO YUYA
Application Number:
JP2015131874A
Publication Date:
January 19, 2017
Filing Date:
June 30, 2015
Export Citation:
Assignee:
NIPPON ZEON CO
International Classes:
G02B5/22; B23K26/18; B23K26/352; B29C47/06
Attorney, Agent or Firm:
Hiroaki Sakai